Method, device and system for compensating brightness of a liquid crystal module

摘要

A method for compensating the brightness of a liquid crystal module involves acquiring an image of a liquid crystal module to obtain the acquired image. The acquired image of the liquid crystal module is compared with a standard image to find a dark region. The compensation coefficient of each pixel in the dark region is calculated. In a display control circuit of the liquid crystal module, the calculated compensation coefficient of pixels is stored for compensating the backlight unit corresponding to pixels in dark region.

主权项

1. A method of compensating the brightness of a liquid crystal module, the method comprises:
acquiring an image of an image displayed by the liquid crystal module to obtain an acquired image; comparing the acquired image with a standard image to find a dark region; calculating a compensation coefficient for each pixel in the dark region, wherein the step of calculating the compensation coefficient for each pixel in the dark region comprises: executing multi-step quantization for brightness of the acquired image in the dark region by means of a predetermined brightness quantization unit; calculating brightness step difference between each pixel in the dark region and a corresponding pixel of the standard image; calculating a ratio of the brightness step difference between a brightness of each pixel in the dark region and a brightness of the corresponding pixel of the standard image; and taking the ratio as the compensation coefficient; and storing the calculated compensation coefficient in a display control circuit of the liquid crystal module; when the liquid crystal module is driven for display, compensating backlight units corresponding to the pixels in the dark region.